1 files changed, 27 insertions, 0 deletions
diff --git a/257/CH8/EX8.23/example_8_23.sce b/257/CH8/EX8.23/example_8_23.sce
new file mode 100644
index 000000000..17abb700e
--- /dev/null
+++ b/257/CH8/EX8.23/example_8_23.sce
@@ -0,0 +1,27 @@
+s=%s
+P=s^6+2*s^5+9*s^4+16*s^3+24*s^2+32*s+16
+routh=routh_t(P)
+disp(routh)
+r=coeff(P)
+n=length(r)
+c=0;
+for i=1:n
+if (routh(i,1)<0)
+c=c+1;
+ end 
+  end
+  if(c>=1)
+    printf("there are %d roots on RHS",c)
+  else printf("there are no roots in RHS")
+  end
+ disp("s is")
+R=(sqrt(roots(routh(3,:))))
+ disp(R)
+k=0 
+for(i=1:3)
+ if(real (R(i,1))==0)
+     k=k+1
+ end
+ end
+ 
+printf("thus %d roots on imaginary axis and there are %d roots in LHS",2*(k-1),6-c-2*(k-1))
+\ No newline at end of file